Color
#309c78
#309c78rgb(48, 156, 120)hsl(160, 53%, 40%)oklch(0.622 0.112 166.6)Colors that go with #309c78
Charcoal, Crimson and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #309c78: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
split-complementshippedCrimson is a split-complement of #309c78: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blue #0000ff
shipped4 real palettes, including Kia's brand system and Unity's brand system put Blue beside #309c78, as the accent.
Chocolate #d2691e
triadicshippedChocolate completes a triad with #309c78 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Copper #b87333
shippedDesigners have shipped Copper with #309c78: 5 real palettes, including Wellness and Clean Beauty, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #309c78: 5 real palettes, including Peacock and Intel's brand system, as the supporting colour.
Midnight Blue #191970
shipped6 real palettes, including Tide Pool and Fintech Trust put Midnight Blue beside #309c78, as that palette's text colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #309c78 in 6 real palettes, including Console Light and Telehealth, as the lead colour.
Real palettes that use #309c78
Tints & shades
Harmonies
Contrast
| #309c78 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.41:1 | fail | pass | fail | |
Aaon black | 6.15:1 | pass | pass | fail |
|
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #309c78 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #309c78 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/309c78-a2beb8-d459be-1f2c2d-e9f1eb?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md